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International Journal of Agricultural Research
  Year: 2008 | Volume: 3 | Issue: 4 | Page No.: 252-260
DOI: 10.3923/ijar.2008.252.260
 
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A New Synthesized 6x-Wheats, Derived from Dwarfing Polish Wheat (Triticum polonicum L.) and Aegilops tauschii Cosson
Hou-Yang Kang, Yi Wang, Hong-Jun Yuan, Yun Jiang and Yong-Hong Zhou

Abstract:
By colchicine treatment of the hybrid plants between Triticum polonicum L. from Xinjiang in China and Aegilops tauschii Cosson. from Middle East, a new synthetic hexaploid wheat (SHW-DPW) was artificially obtained for the fist time. The average seed set of the intergeneric hybrids was 9.71% (8.27-15.31%) with colchicines treatment. The morphology of the SHW-DPW plants was comparable to that of the primary F1 plants and the SHW-DPW plants appeared more robust. All the SHW-DPW plants were uniform in morphology and had some obvious traits inherited from T. polonicum and Ae. tauschii. Especially, the glumes were very soft and the rachis internodia was short, which was different from other synthetic hexaploid wheat. Their spikes were morphologically similar to those of Triticum petropavlovskyi Udacz. et Miguch. The SHW-DPW plants were fertile, with 58.95% selfed seed set for the euhexaploids and 45.63% for the aneuploids, respectively. The meiosis of the SHW-DPW plants was quite regular, which showed a pairing configuration of 0.43 univalents, 20.77 bivalents and 0.01 trivalents. The rate of chromosome association of the aneuploids was comparatively lower than that in the euploid individuals. The potential utilization for wheat improvement and study for the origin of T. petropavlovskyi are discussed in the present study.
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How to cite this article:

Hou-Yang Kang, Yi Wang, Hong-Jun Yuan, Yun Jiang and Yong-Hong Zhou, 2008. A New Synthesized 6x-Wheats, Derived from Dwarfing Polish Wheat (Triticum polonicum L.) and Aegilops tauschii Cosson. International Journal of Agricultural Research, 3: 252-260.

DOI: 10.3923/ijar.2008.252.260

URL: https://scialert.net/abstract/?doi=ijar.2008.252.260

 
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